2x2 section suggestion

[antoniep2001]

Hey, I thought it might be interesting to expand the 2x2 section on CS timer with the following:

• 2gen
• TCLL+
• TCLL-
• TCLL (Combination of TCLL+ and TCLL-, same way EG0, EG1 and EG2 are combined for the EG section).
• LS1
• LS2
• LS3
• LS (Combination of LS1, LS2 and LS3, same way EG0, EG1 and EG2 are combined for the EG section). Source for all of the above (except 2gen) can be found here: https://docs.google.com/spreadsheets/d/1OFXakCV85Mp2zsQBXMxiMX9a506JeAcLnUXZr8FgXAY/edit#gid=1467226722

I think this will be useful for people trying to learn the algorithms and in general to expand the repertoire of CS timer.

Also, I am sorry if I posted this to the wrong section, I am quite unfamiliar with Github so I tried my best.